Gerald Halpert
32Patents
17h-index
28Co-inventors
77Inventor score
Filing activity: May 7, 1990 → Sep 1, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5599638A | Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane | Emerging Cross-Sectional Technologies | 173 | Expired |
| US5773162A | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 113 | Expired |
| US5945231A | Direct liquid-feed fuel cell with membrane electrolyte and manufacturing thereof | Emerging Cross-Sectional Technologies | 111 | Expired |
| US5436093A | Method for fabricating carbon/lithium-ion electrode for rechargeable lithium cell | Emerging Cross-Sectional Technologies | 108 | Expired |
| US5795496A | Polymer material for electrolytic membranes in fuel cells | Emerging Cross-Sectional Technologies | 83 | Expired |
| US5360686A | Thin composite solid electrolyte film for lithium batteries | Electricity | 67 | Expired |
| US6444343B1 | Polymer electrolyte membranes for use in fuel cells | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6265093A | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6303244A | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5278000A | Overcharge and overdischarge protection of ambient temperature secondary lithium cells | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5427872A | Dendrite preventing separator for secondary lithium batteries | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6420059B1 | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6146781A | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6248460A | Organic fuel cell methods and apparatus | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6254748A | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5656388A | Metal hydrides as electrode/catalyst materials for oxygen evolution/reduction in electrochemical devices | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6187471A | Bimodal battery | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5294503A | Anode for rechargeable ambient temperature lithium cells | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6150047A | Polymer electrolyte membrane assembly for fuel cells | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6444341B1 | Polymer electrolyte membrane assembly for fuel cells | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6399235B1 | Polymer electrolyte membrane assembly for fuel cells | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5573873A | Long life NA/NiCl.sub.2 cells | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6740434B2 | Organic fuel cell methods and apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6589684B1 | Direct methanol feed fuel cell and system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6821659B2 | Organic fuel cell methods and apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.